Using a signal cancellation technique involving impulse response to assess directivity of hearing aids.

  title={Using a signal cancellation technique involving impulse response to assess directivity of hearing aids.},
  author={Yu-Hsiang Wu and Ruth A Bentler},
  journal={The Journal of the Acoustical Society of America},
  volume={126 6},
The directional microphone systems of modern digital hearing aids are capable of changing their spatial directivity pattern and/or the microphone mode in response to changes in the properties of environmental sounds. These adaptive/automatic features make measurement of a hearing aid's directivity in a given test environment very difficult. Assessing the directivity of such systems requires a signal that can record the system's response while not changing the system's directivity. This paper… CONTINUE READING

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